A new method for producing ultra-cold molecular ions

一种产生超冷分子离子的新方法

• 批准号: 0855683
• 负责人: Eric Hudson
• 金额: $ 50万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-15 至 2012-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855683&HistoricalAwards=false
• 关键词: new; method; producing; ultra; cold

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This research program is developing a new technique for the production of ultracold molecular ions. By utilizing sympathetic cooling with appropriately chosen ultracold atoms, both the molecular ion's external (translational) and internal (rotational and vibrational) motions can be quickly cooled. No other technique has been demonstrated, or even proposed, with this feature. Therefore, this award, and its accompanying experimental effort, represents a dramatically simplified scheme for producing ultracold molecular ions in their absolute internal and external ground state as compared to previous proposals. The early stages of this work will result in a better understanding of the detailed statistical and chemical physics inherent to the quantum interactions between ultracold atoms and molecular ions in the ion trap environment. Once these features are understood, the technique will be used to pursue applications ranging from quantum chemistry to precision measurement to quantum information.This award will have a broad impact to the fields of physics and chemistry. With an efficient means of producing ultracold molecular ions, researchers would be able to pursue interests at the leading edge of fields as diverse as quantum chemistry, astrophysics, fundamental physics, and quantum computation. The most noteworthy of these goals include: the study of cold chemistry, which not only has important implications for understanding the formation of interstellar clouds, but will allow for investigation, and possible control, of reactive collisions in the truly quantum regime; precision measurement of molecular transitions, which can be used to very sensitively measure parity violating effects, as well as constrain the possible variation of the fundamental constants; and, perhaps most interestingly, the implementation of a robust scalable, quantum computation architecture. Furthermore, under this program both undergraduate and graduate students, as well as postdoctoral researchers will be trained in atomic, molecular, and optical physics research.

该奖项由 2009 年美国复苏和再投资法案（公法 111-5）资助。该研究项目正在开发一种生产超冷分子离子的新技术。通过利用适当选择的超冷原子的交感冷却，分子离子的外部（平移）和内部（旋转和振动）运动都可以快速冷却。没有其他技术被证明，甚至没有提出具有此功能的技术。因此，与之前的提案相比，该奖项及其伴随的实验工作代表了一种在绝对内部和外部基态下产生超冷分子离子的显着简化的方案。这项工作的早期阶段将有助于更好地理解离子阱环境中超冷原子和分子离子之间的量子相互作用所固有的详细统计和化学物理。一旦了解了这些特征，该技术将用于追求从量子化学到精密测量再到量子信息的应用。该奖项将对物理和化学领域产生广泛的影响。借助产生超冷分子离子的有效方法，研究人员将能够在量子化学、天体物理学、基础物理学和量子计算等不同领域的前沿领域追求兴趣。这些目标中最值得注意的包括：冷化学的研究，这不仅对理解星际云的形成具有重要意义，而且将允许在真正的量子体系中研究和可能控制反应碰撞；分子跃迁的精确测量，可用于非常灵敏地测量宇称破坏效应，并限制基本常数可能的变化；也许最有趣的是，稳健的可扩展量子计算架构的实现。此外，根据该计划，本科生和研究生以及博士后研究人员都将接受原子、分子和光学物理研究方面的培训。